docs: def get(self, request, uri):
          """
          List uri revisions.
  
          JSON Response:
              [[uri, state], ...]
          """
          uri = self.decode_uri(uri)
          revisions = cio.revisions(uri)
          revisions = [list(revision) for revision in revisions]  # Convert tuples to lists
          return self.render_to_json(revisions)